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On top of the production configuration, this commit adds two options:

  • abort:true - most jemalloc warnings become fatal (opt.abort)
  • junk:true - both allocated and deallocated memory will be
    initialized to 0xa5. (opt.junk)

Combined with the existing abort_conf:true, this should be equivalent
to enabling the debug feature of jemallocator. We cannot enable
this feature in Cargo.toml because that would affect performance in
production.

r? @carols10cents

@jtgeibel
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Hopefully #2027 (comment) was just a fluke. If not, this should make things worse I guess, lol. The tests run fine for me locally.

On top of the production configuration, this commit adds two options:

* `abort:true` - most jemalloc warnings become fatal ([opt.abort])
* `junk:true` - both allocated and deallocated memory will be
  initialized to 0xa5. ([opt.junk])

Combined with the existing `abort_conf:true`, this should be equivalent
to enabling the `debug` feature of `jemallocator`.  We cannot enable
this feature in `Cargo.toml` because that would affect performance in
production.

[opt.abort]: http://jemalloc.net/jemalloc.3.html#opt.abort
[opt.junk]: http://jemalloc.net/jemalloc.3.html#opt.junk
@carols10cents
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LGTM! 🤷‍♀

@bors r+

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bors commented Dec 23, 2019

📌 Commit 8cd03c7 has been approved by carols10cents

bors added a commit that referenced this pull request Dec 23, 2019
Enable debug MALLOC_CONF options on CI

On top of the production configuration, this commit adds two options:

* `abort:true` - most jemalloc warnings become fatal ([opt.abort])
* `junk:true` - both allocated and deallocated memory will be
  initialized to 0xa5. ([opt.junk])

Combined with the existing `abort_conf:true`, this should be equivalent
to enabling the `debug` feature of `jemallocator`.  We cannot enable
this feature in `Cargo.toml` because that would affect performance in
production.

[opt.abort]: http://jemalloc.net/jemalloc.3.html#opt.abort
[opt.junk]: http://jemalloc.net/jemalloc.3.html#opt.junk

r? @carols10cents
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bors commented Dec 23, 2019

⌛ Testing commit 8cd03c7 with merge 79176c7...

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bors commented Dec 23, 2019

☀️ Test successful - checks-travis
Approved by: carols10cents
Pushing 79176c7 to master...

@bors bors merged commit 8cd03c7 into rust-lang:master Dec 23, 2019
@jtgeibel jtgeibel deleted the ci/malloc_conf branch December 23, 2019 22:30
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4 participants